1 /*
2 * blktrace output analysis: generate a timeline & gather statistics
3 *
4 * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21 #include "globals.h"
22
__out(FILE * ofp,__u64 tm,enum iop_type type,__u64 sec,__u32 nsec,int indent)23 static inline void __out(FILE *ofp, __u64 tm, enum iop_type type,
24 __u64 sec, __u32 nsec, int indent)
25 {
26 if (tm != (__u64)-1) {
27 if (indent)
28 fprintf(ofp, " ");
29 fprintf(ofp, "%5d.%09lu %c %10llu+%-4u\n",
30 (int)SECONDS(tm), (unsigned long)NANO_SECONDS(tm),
31 type2c(type), (unsigned long long)sec, nsec);
32 }
33 }
34
display_io_track(FILE * ofp,struct io * iop)35 static void display_io_track(FILE *ofp, struct io *iop)
36 {
37 fprintf(ofp, "%3d,%-3d: ", MAJOR(iop->t.device), MINOR(iop->t.device));
38 __out(ofp, iop->t.time, IOP_Q, iop->t.sector, t_sec(&iop->t), 0);
39
40 if (iop->g_time != (__u64)-1)
41 __out(ofp, iop->g_time, IOP_G, iop->t.sector, t_sec(&iop->t),1);
42 if (iop->i_time != (__u64)-1)
43 __out(ofp, iop->i_time, IOP_I, iop->t.sector, t_sec(&iop->t),1);
44 if (iop->m_time != (__u64)-1)
45 __out(ofp, iop->m_time, IOP_M, iop->t.sector, t_sec(&iop->t),1);
46
47 __out(ofp, iop->d_time, IOP_D, iop->d_sec, iop->d_nsec, 1);
48 __out(ofp, iop->c_time, IOP_C, iop->c_sec, iop->c_nsec, 1);
49 fprintf(ofp, "\n");
50 }
51
handle_complete(struct io * c_iop)52 static void handle_complete(struct io *c_iop)
53 {
54 LIST_HEAD(head);
55 struct list_head *p, *q;
56 __u64 d_time = (__u64)-1;
57 FILE *pit_fp = c_iop->dip->pit_fp;
58 double cur = BIT_TIME(c_iop->t.time);
59
60 update_blks(c_iop);
61 update_cregion(&all_regions, c_iop->t.time);
62 update_cregion(&c_iop->dip->regions, c_iop->t.time);
63 if (c_iop->pip)
64 update_cregion(&c_iop->pip->regions, c_iop->t.time);
65 aqd_complete(c_iop->dip->aqd_handle, cur);
66 rstat_add(c_iop->dip->rstat_handle, cur, c_iop->t.bytes >> 9);
67
68 dip_foreach_list(c_iop, IOP_Q, &head);
69 list_for_each_safe(p, q, &head) {
70 struct io *q_iop = list_entry(p, struct io, f_head);
71 __u64 q2c = tdelta(q_iop->t.time, c_iop->t.time);
72
73 c_iop->bytes_left -= q_iop->t.bytes;
74
75 update_q2c(q_iop, q2c);
76 latency_q2c(q_iop->dip, q_iop->t.time, q2c);
77
78 if (q_iop->d_time != (__u64)-1) {
79 __u64 d2c = tdelta(q_iop->d_time, c_iop->t.time);
80
81 p_live_add(q_iop->dip, q_iop->d_time, c_iop->t.time);
82 update_d2c(q_iop, d2c);
83 latency_d2c(q_iop->dip, c_iop->t.time, d2c);
84 iostat_complete(q_iop, c_iop);
85
86 d_time = q_iop->d_time;
87 }
88
89 if (per_io_ofp) {
90 q_iop->c_time = c_iop->t.time;
91 q_iop->c_sec = c_iop->t.sector;
92 q_iop->c_nsec = t_sec(&c_iop->t);
93 display_io_track(per_io_ofp, q_iop);
94 }
95
96 if (q_iop->dip->pit_fp) {
97 fprintf(pit_fp, "%d.%09lu ",
98 (int)SECONDS(q_iop->t.time),
99 (unsigned long)NANO_SECONDS(q_iop->t.time));
100 }
101
102 list_del(&q_iop->f_head);
103 io_release(q_iop);
104 }
105
106 if (per_io_ofp)
107 fprintf(per_io_ofp,
108 "-----------------------------------------\n");
109
110 if (c_iop->dip->pit_fp) {
111 fprintf(pit_fp, "| %d.%09lu | %d.%09lu\n",
112 (int)SECONDS(d_time),
113 (unsigned long)NANO_SECONDS(d_time),
114 (int)SECONDS(c_iop->t.time),
115 (unsigned long)NANO_SECONDS(c_iop->t.time));
116 }
117 }
118
trace_complete(struct io * c_iop)119 void trace_complete(struct io *c_iop)
120 {
121 if (c_iop->t.bytes == 0)
122 return;
123
124 if (io_setup(c_iop, IOP_C))
125 handle_complete(c_iop);
126
127 io_release(c_iop);
128 }
129